What is ContainerTag.js (Removal Guide)

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This page aims to answer the question What is ContainerTag.js? These ContainerTag.js removal instructions work for Chrome, Firefox and Internet Explorer, as well as every version of Windows.

Welcome to “How to remove guide”. If you landed here, you are probably one of the unfortunate many, who have been disturbed by the enormous amount of ads, pop-ups and banners generated by ContainerTag.js. This program is an adware variant and it has probably invaded your Chrome, Firefox or other default browser with the sole aim of displaying tons of popping messages, blinking boxes, notifications, and ads. It may have also applied some strange changes to your browser settings – your homepage may have been changed to a promotional website and every time you try to search something on the web, your searches may get redirected to other web locations full with aggressive advertisements. The chance is that your normal browsing may be disturbed as a result of ContainerTag.js’s activities on your screen and you are most probably looking for a way to remove it. Luckily, here you will find just the right solution that will help you browse the web in peace again. In this article, we have prepared a removal guide, which will help you detect and uninstall ContainerTag.js from your system. It won’t take you more than a few minutes to follow the instructions below and we believe you will do that with ease. But before you scroll down, we suggest you read a bit more about the way this adware operates and how it has been installed on your system unnoticed.

What is ContainerTag.js ?

You probably know that malware comes in different shapes and sizes. Be it a virus that would hack your system, or a Trojan that would spy on you, or even Ransomware that would encrypt all your data and blackmail you – we are all surrounded by endless dangers and annoyances when we browse the web. With no doubt, facing such threats will have a severe negative effect on any machine.

However, not all the applications you can meet online are as dangerous as Ransomware or a Trojan. There is a group of software that may cause some irritation and disturbance, but still cannot be considered as harmful to your system. This type of software is known as adware and ContainerTag.js is one of the many representatives. To give you a better idea of what exactly you are dealing with, here we are going to take a close look at this application and the way it operates and distributes itself. Generally, nothing fatal or harmful could happen to your system if you have adware on it. This software is used mostly as an ad-generating tool that serves the online advertising industry. Its developers usually use it to earn from the paid advertisements that it displays through a method called Pay-Per-Click. Moreover, adware is perfectly legitimate, unlike viruses. But sometimes the amount of ads, pop-ups and boxes it generates may become uncontrollable and may interfere with the normal browsing activity of the users, which is the main reason for them to decide to uninstall it. Doing so, however, isn’t that easy because there is no quick option to remove the adware unless you delete its files from your system.

How did you get ContainerTag.js on your computer?

Software bundles are the most common method for adware distribution and you have probably got ContainerTag.js along with another piece of software you have downloaded from the web. It could be from a freeware platform, open source download websites, torrents, installation managers, direct downloads from the web or even spam emails. There is a common mistake that many users make when they install such bundles – they skip reading the EULA or checking the “Advanced” or so-called “Custom” installation option. Proceeding with the standard installation doesn’t give them the detailed look on all the potentially unwanted software packed inside the setup and this is how they end up with a bunch of software they may not really want. That’s why, to avoid this, it is important to always opt for the most detailed installation options. This is simple advice that takes just a few minutes to apply and really saves you from the disturbance and the need of removing the adware later. In your case, however, you obviously made that common mistake and now if you want to remove ContainerTag.js you will need to follow the instructions in the removal guide below. Be careful when interacting with the system files, though, because deleting the wrong ones may corrupt your system irreversibly. If you are afraid of making a mess, you can scan your system with the professional ContainerTag.js removal tool for extra security.


Name ContainerTag.js
Type  Adware
Danger Level Medium (nowhere near threats like Ransomware, but still a security risk)
Symptoms  Uncontrollable ads, banners and pop-ups take over your browser.
Distribution Method The most common method of distribution is software bundles that could be found on freeware websites, download platforms, torrents, spam emails, installation managers, etc.
Detection Tool

Keep in mind, SpyHunter’s malware detection tool is free. To remove the infection, you’ll need to purchase the full version.
More information about SpyHunter and steps to uninstall.

Remove ContainerTag.js


Some of the steps will likely require you to exit the page. Bookmark it for later reference.

Reboot in Safe Mode (use this guide if you don’t know how to do it).


This is the most important step. Do not skip it if you want to remove Containertag.js successfully!

Press CTRL + SHIFT + ESC at the same time and go to the Processes Tab (the “Details” Tab on Win 8 and 10). Try to determine which processes are dangerous. 


Right click on each of them and select Open File Location. Then scan the files with our free online virus scanner:

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Maximum file size: 128MB.

This scanner is free and will always remain free for our website's users. You can find its full-page version at: https://howtoremove.guide/online-virus-scanner/

Scan Results

Virus Scanner Result

After you open their folder, end the processes that are infected, then delete their folders. 

Note: If you are sure something is part of the infection – delete it, even if the scanner doesn’t flag it. No anti-virus program can detect all infections. 


Hold together the Start Key and R. Type appwiz.cpl –> OK.


You are now in the Control Panel. Look for suspicious entries. Uninstall it/them.

Type msconfig in the search field and hit enter. A window will pop-up:


Startup —> Uncheck entries that have “Unknown” as Manufacturer or otherwise look suspicious.


Hold the Start Key and R –  copy + paste the following and click OK:

notepad %windir%/system32/Drivers/etc/hosts

A new file will open. If you are hacked, there will be a bunch of other IPs connected to you at the bottom. Look at the image below:

hosts_opt (1)

If there are suspicious IPs below “Localhost” – write to us in the comments.

Open the start menu and search for Network Connections (On Windows 10 you just write it after clicking the Windows button), press enter.

  1. Right-click on the Network Adapter you are using —> Properties —> Internet Protocol Version 4 (ICP/IP), click  Properties.
  2. The DNS line should be set to Obtain DNS server automatically. If it is not, set it yourself.
  3. Click on Advanced —> the DNS tab. Remove everything here (if there is something) —> OK.



  • After you complete this step, the threat will be gone from your browsers. Finish the next step as well or it may reappear on a system reboot.

Right click on the browser’s shortcut —> Properties.

NOTE: We are showing Google Chrome, but you can do this for Firefox and IE (or Edge).


Properties —–> Shortcut. In Target, remove everything after .exe.

ie9-10_512x512  Remove Containertag.js from Internet Explorer:

Open IE, click  IE GEAR —–> Manage Add-ons.

pic 3

Find the threat —> Disable. Go to IE GEAR —–> Internet Options —> change the URL to whatever you use (if hijacked) —> Apply.

firefox-512 Remove Containertag.js from Firefox:

Open Firefoxclick  mozilla menu  ——-> Add-ons —-> Extensions.

pic 6

Find the adware/malware —> Remove.
chrome-logo-transparent-backgroundRemove Containertag.js from Chrome:

Close Chrome. Navigate to:

 C:/Users/!!!!USER NAME!!!!/AppData/Local/Google/Chrome/User Data. There is a Folder called “Default” inside:

Rename the Folder to Backup Default

Rename it to Backup Default. Restart Chrome.


To remove parasite on your own, you may have to meddle with system files and registries. If you were to do this, you need to be extremely careful, because you may damage your system.

If you want to avoid the risk, we recommend downloading SpyHunter
a professional malware removal tool.

More information on SpyHunter, steps to uninstallEULAThreat Assessment Criteria, and Privacy Policy.

Type Regedit in the windows search field and press Enter.

Inside, press CTRL and F together and type the threat’s Name. Right click and delete any entries you find with a similar name. If they don’t show up this way, go manually to these directories and delete/uninstall them:

  • HKEY_CURRENT_USER—-Software—–Random Directory. It could be any one of them – ask us if you can’t discern which ones are malicious.
    HKEY_CURRENT_USER—-Software—Microsoft—-Windows—CurrentVersion—Run– Random
    HKEY_CURRENT_USER—-Software—Microsoft—Internet Explorer—-Main—- Random

If the guide didn’t help you, download the anti-virus program we recommended or ask us in the comments for guidance!


  • I’m showing two localhost, it says “name resolution is handled within DNS itself localhost
    ::1 localhost

    • This IP address is not problematic and you should not remove it. If you still have problem with the unwanted program, you should try some of the other steps described in the guide. If you should run into any problem completeing the guide, write to us in the comment and we will help you deal with the problem.

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